Express the query with Tuple Relational Calculus
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Express the query with Tuple Relational Calculus Consider the Movies, Stars, Studios Database with the following...
Exercise 7.3.1: Show how to alter your relation schemas for the movie example: M o v ie (title , y ear, le n g th , genre, studioName, producerC#) S ta rsln (m o v ieT itle , movieYear, starName) MovieStar(name, ad d ress, gender, b irth d a te ) MovieExec(name, ad d ress, c e rt# , netWorth) Studio(nam e, ad d ress, presC#) in the following ways. a) Make t i t l e and year the...
Consider the following relational schema of the company’s database. Use Tuple Relational Calculus (TRC) & Domain Relational Calculus (DRC) expression to answer each of the following three questions (Step by step brief description is appreciated if possible) PRODUCT (pid, stock, supplier) CLIENT (cid, name, address, city) ORDER (orderno, date, quantity, pid, cid) Question 1: Find the number of orders for products that are being ordered in quantities smaller than 100 items by customers living in Madrid. Provide solutions expressed both...
May I ask the SQL code as follows? The relational database moviedb has the following database schema: Movie(title, production year, country, run time, major genre) primary key : {title, production year} Person(id, first name, last name, year born) primary key : {id} Award(award name, institution, country) primary key : {award name} Restriction Category(description, country) primary key : {description, country} Director(id, title, production year) primary key : {title, production year} foreign keys : [title, production year] ⊆ Movie[title, production year] [id]...
Specify relational calculus expression for the following descriptions on the Library database schema shown in Figure 4.6. a) Retrieve Publishers’ name and phone number whose books where borrowed from Baltimore Branch. b) List the book title, book id and branch name with less than 10 copies c) List customer card number, customer name, branch name and book title for books which are currently on loan. BOOK Book id Title Publisher_name BOOK_AUTHORS Book idAuthor name PUBLISHER Name Address Phone BOOK COPIES...
Due date: November 6, 2018 (Tuesday) Problems: 1. Specify the following queries on the database schema shown in Figure 3.6 using both the tuple relational calculus and the domain relational calculus. You don't need to show the result of each query if applied to the database of Figure 3.6. (a) Retrieve the names of employees in department 5 who work more than 10 hours per week on the 'ProductX' project (b) List the names of employees who have a dependent...
Given the following relational database schema (primary keys are bold and underlined). Answer questions 2.1 to 2.4 Orders(orderld, customerld, dateOrdered, dateRequired, status) Customer(customerld, customerLastName, customerStreet, customerCity, customerState, customer Lip OrderDetails(orderld.productld, quantity, lineNumber, amount) Products(productld, name, description, quantity, unitPrice) Account(accountNumber, customerld, dateOpened, creditCard, mailingStreet, mailingCity, mailingState, mailingZip) 2.1 (2 Points) List all possible foreign keys. For each foreign key list both the referencing and referenced relations. 2.2 (2 Points) Devise a reasonable database instance by filling the tables with data of...
Consider the following relational database to manage concert and ticket sales. The relations are artist, concert, venue, seat, ticket, and fan. The schemas for these relations (with primary key attributes underlined) are: Artist-schema = (artistname, type, salary) Concert-schema = (artistname, date, venuename, artistfees) Venue-schema = (venuename, address, seating_capacity) Seat-schema=(venuename, row, seatnumber) Ticket-schema = (fanID, date, venuename, row, seatnumber) Fan-schema = (fanID, name, address, creditcardno) Where: • artistname is a unique name for the artist (because of trademark/copyright rules no two...
Suppose a database has the following three relations. Movie (mid: integer, title: string, director: string, releaseDate: date) PlaysAt (theaterID: integer, movieId: integer, showDate: date) Theater (tID: integer, name: string, phone: string, screencount: integer) "movieID" in PlaysAt is a foreign key referencing "mid" in Movie. "theaterID" in PLaysAt is a foreign key referencing "tID" in Theater. Write the following queries in both relational algebra and SQL. Find the titles of movies playing on 2 / 26 / 2019 and the IDs...
Suppose a database has the following three relations. Museum (mid: integer, name: string, address: string, website: string) Displays (museumID: integer, artID: integer, startDate: date) ArtItem (aid: integer, title: string, weightPnd: integer, type: string) Artist (pid: integer, firstname: string, lastname: string, birthdate: date, deathdate: date) Creates (artistID: integer, artID: integer, year: integer) (The "bit" data type stores 0 or 1. False or true. Booleans.) "museumID" in Displays is a foreign key referencing "mid" in Museum. "artistID" in Creates is a foreign...
DATABASES You are required to design and implement a relational database to help the local community center better serve the residents in your neighborhood. Database Specifications: In your preliminary analysis, you have determined the following basic facts about the community center and the services it provides to the residents in the neighborhood: - The community center serves multiple areas which fall into different zip codes. - The community center provides collaborative family based care services. An immediate family is...